Little Skate Egg Case (image) Marine Biological Laboratory Share Print E-Mail Caption Backlit egg case of a little skate embryo (Leucoraja erinacea), showing emerging pectoral and pelvic fins, external gills, and a large yolk. Credit Katharine Criswell and Robert Criswell Usage Restrictions Please use with proper credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.